Q: 1. What
is the ruling on Salat-ul-Tasabih (supererogatory Prayer in which Allah is glorified 75 times in each unit of Prayer)? Is there any evidence to support it? (Part No. 8; Page No. 163) 2. How is it performed?
First: the basic principle is that all acts of worship are Tawqifiy (bound by a religious text and not amenable to personal opinion). Therefore, it is not permissible to say that a certain act of worship is legal unless there is proof to support it. We do not know of any sound evidence in support of the permissibility of Salat-ul-Tasabih. In Al-Targhib wa Al-Tarhib and other books, there are Hadiths that are not free of faults in this regard. A Muslim should worship Allah according to what He has mentioned in the Qur'an and the Hadiths that have been authentically reported from the Messenger of Allah (peace be upon him). All acts of worship have two pillars; sincerity and faithful adherence. Allah has mentioned them in many Ayahs (Qur'anic verses) among them are His saying,
Yes, but whoever submits his face (himself) to Allâh (i.e. follows Allâh’s Religion of Islâmic Monotheism) and he is a Muhsin then his reward is with his Lord (Allâh), on such shall be no fear, nor shall they grieve. [See Tafsir Ibn Kathîr ].
Submission to Allah means sincerity while Ihsan (the perfection of Faith) implies faithful adherence. Allah says,
And whosoever submits his face (himself) to Allâh, while he is a Muhsin (good-doer i.e. performs good deeds totally for Allâh’s sake without any show off or to gain praise or fame and does them in accordance with the Sunnah of Allâh’s Messenger Muhammad صلى الله عليه وسلم), then he has grasped the most trustworthy handhold [Lâ ilâha illallâh (none has the right to be worshipped but Allâh)].
Second: Discussing this issue should be dependent upon evidence. However, no sound evidence in support of its validity is found as mentioned in the first part of the answer. As for the related Hadith, (Part No. 8; Page No. 164) they are not free of faults. Therefore, the manner of performing Salat-ul-Tasabih is various. You can refer to "Al-Targhib wa Al-Tarhib" for more information.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.