مقاصد الإسلام في تحقيق السلام

This research focused on highlighting the purposes of Islam in achieving peace. This paper explains how Islam is the religion of peace and security for the worlds. Its provisions, legislations and purposes ensured all mankind the right to security and security of all kinds: Psychological security, financial security, social security and other types of security which ensure that humanity can live in peace. This is without any kind of these securities being subjected to any slight aggression, sabotage, deprivation or injustice, and if any of that happens then it would be a manifestation of violence and terrorism that is neither accepted nor recognized by Islam which is the religion of peace. The research has shown that Islam has preceded all international laws and norms with respect to the legalization of human rights in peace and war times alike and the sanctioning of those who violate them in this world and in the Hereafter. This is done with supporting evidence from the Quran, the Sunnah, the work of the leaders of Muslim Ummah throughout the Islamic centuries, and the testimonies of non-Muslims who have lived the mercy of Islam and come to know the observance of Islam of human rights. The aims of the research are: To demonstrate the legitimate purposes that Islam has brought to preserve human dignity and security. To show the precedence and superiority of Islamic law in the field of human rights care. To highlight the rich Islamic heritage of human values and civilization through the rules of humanitarian dealing in Islamic jurisprudence in war and peace, and the contributions of the purposes of the Sharia in the development of rules for the preservation of rights and freedoms.

Some Cosmological Implications of Extended Scalar Tensor Theories

This thesis is devoted to explore some cosmological implications in gravity and generalizedgravity. Initially, we discuss the cosmological reconstruction of theory (where,and represent the Ricci scalar, scalar invariant and scalar field) corresponding to power law and de Sitter evolution in the framework of FRW universe model. We derive the energy conditions for this modified theory which seem to be more general and can be reduced to some known forms of these conditions in general relativity,andtheories. We also present the general constraints in terms of recent values of snap, jerk, deceleration and Hubble parameters. The energy bounds are analyzed for reconstructed as well as known models in this theory. Finally, the free parameters are analyzed comprehensively. First and second laws of black hole thermodynamics are examined at the apparent horizon of FRW spacetime in gravity. In this modified theory, Friedmann equations are formulated for any spatial curvature. These equations can be presented into the form of first law of thermodynamics for ̂̂ , wherêis an extra entropy term because of the non-equilibrium presentation of the equations and ̂ for the equilibrium presentation. The generalized second law of thermodynamics (GSLT) is expressed in an inclusive form where these results can be represented in GR,andgravities. Finally to check the validity of GSLT, we take some particular models and produce constraints of the parameters. Moreover, we examine static spherically symmetric wormhole solutions in generalizedgravity. To do this, we consider three different kinds of fluids: anisotropic, barotropic and isotropic. We explore differentmodels and inspect the energy conditions for all of those three fluids. It is found that under some models in this theory, it is possible to obtain wormhole solutions without requiring exotic matter. From our results, one can conclude that for all three cases of fluids stable and realistic wormhole solutions can be constructed.Further, we have consideredaction which is non-minimally coupled to the xi scalar field. In this context, we obtain the exact analytical solutions for inflationary era as well as find a graceful exit condition from inflation. We calculate the perturbed parameters, i.e., number of e-folds, slow-roll parameters, scalar and tensor power spectra, corresponding spectral indices and ultimately tensor to scalar ratio. It is showed that the power spectra lead to blue-tilt for this model. The trajectories of the perturbed parameters are plotted to compare the results with recent observations.Finally, we will discuss cosmological models using Bianchi type I for anisotropic fluid intheory of gravity which involves scalar potential. For this purpose, we consider power law assumptions of coupling function and scalar field along with the proportionality condition of expansion and shear scalars. We choose twomodels and obtain exact solutions of field equations in both cases. For these constructed models, the behavior of different physical quantities like EoS parameter, self-interacting potential as well as deceleration and skewness parameters is explored and illustrated graphically for the feasible ranges of free parameters. It is concluded that anisotropic fluid approaches to isotropy in later cosmic times for both models which is compatible with the observational data.