Q 2: On many occasions we meet people
saying that they have good or bad luck; is it permissible
to believe in luck?
(Part No. 26; Page No. 369
Muslims have to believe in the Divine Decree. They have to endure adversity patiently and thank and praise Allah at times of prosperity. They have to believe that Allah has already divided provisions amongst His slaves and decreed for them different ages and deeds when they were just fetuses in the wombs of their mothers. Allah is All-Wise regarding all His Divine Decree. Accordingly, it is Wajib (obligatory) on every Muslim to ascribe all the graces and abundant provisions that people have to Allah (Glorified be He); the Only One Who grants all bounties and facilitates them to His slaves. Muslims also have to ascribe anything that afflicts them to the Divine Decree. Doing all this is true belief in Tawhid-ul-Rububiyyah (Oneness of Allah's Lordship). Besides, Muslims have to avoid all that weakens their `Aqidah (creed) and Tawhid (belief in the Oneness of Allah). They should not ascribe graces or calamities to good or bad luck for doing so is not permissible.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.