Is the supplication, "O Lord, if You do not save me from this smoking, then it will be You who left me in this perdition," permissible in Islamic law, given that it contains an accusation against Allah, and is a servant's failure to rid himself of sin attributable to Allah?

The wording of the aforementioned supplication is considered ill-mannered towards Allah and an invalid protest against sin using divine decree. Such a protest is baseless in religious law, logic, and reality. The fact that a person stops sinning because of it does not legitimize it, for Allah may answer the prayers of disbelievers and polytheists out of His wisdom. Furthermore, the answer may be due to the supplicant's desperation, or out of Allah's mercy, or it may be something Allah has decreed independently of the supplication.

A servant's addiction to sin and inability to break free from it occurs by Allah's decree and destiny, for Allah guides and misguides whom He wills. However, Allah holds a servant accountable only for their actions and what they earn, because He has given them intellect, will, and choice. The accountable individual chooses between obedience and disobedience. Allah's misguidance of a servant occurs by withholding His divine enabling grace (tawfiq) from them and leaving them to their sins.