شرعی امور میں آسانی اور سہولت کا تصور، قرآنی احکام کی روشنی میں

Islam is considered to be the religion of nature due to its originality and suitability to human nature for all times or centuries. It continues to be successful in the developed world, and elsewhere, because its call is in accordance with the fitrah or natural inclinations of mankind. Allah, subhanahu wata'aala, is the creator of mankind and therefore knows his nature more intricately than mankind himself. Allah has therefore chosen for us a religion best suited to the nature of mankind, a religion that goes neither to the extremes of hardship nor of laxity, but instead provides a middle path; in other words, a religion of ease. Islam does not lay on people tasks that they cannot do or they will have difficulty in doing. Whenever, there is any difficulty performing any religious obligation faced by Muslims, they have provided an element of ease and comfort. In this regard, the focus of this paper is to throw light on the notion of ease and leniency of Islam.  

Open-Flavor Strong Decays of Open-Bottom Mesons in the 3P0 Model

In this dissertation, we investigate the properties (spectrum, radiative widths and strong decay widths) of open-bottom (B,Bs and Bc) mesons. We use the non-relativistic quark potential model to calculate the masses and wave functions of the mesons. We numerically solve the radial Schr¨odinger equation by using the shooting method to find energy eigenvalues. The radiative transitions are evaluated using the Coulomb plus linear plus smeared hyperfine wave functions. We predict strong decay amplitudes by assuming simple harmonic oscillator(SHO)wavefunctionsin themodified 3P0 model. Thesimpleharmonic oscillator parameter β for different states of mesons are obtained by fitting the SHO wave function to the corresponding quark model wave function. The total decay widths of different states of open-bottommesonsarepredictedbyincludingtheradiativeandstrongwidths. Thesetotal widths are further used to calculate the branching ratios of each decay channel for a specificinitialstateofopen-bottommesons. Thetheoreticallypredictedmassesandtotaldecay widthsarecomparedtoexperimentwherepossibleandusedtomakeassignmentsfortherecentlydiscoveredstatesofopen-bottommesons. Thepredictedpropertiesofdifferentstates of open-bottom mesons can be helpful for future experimental searches and also to test our theoretical understanding against experimental measurements once they are available.