The Book of Asceticism · Hadith 177 (#Ḥadīth #11)

محمد بن الفضيل عن أبي الحسن الرضا عليه السلام قال: كتبت إليه أسأله عن مسألة فكتب إلى: ان الله يقول: (ان المنافقين يخادعون الله وهو خادعهم إلى قوله سبيلا) ليسوا من عترة رسول الله وليسوا من المؤمنين وليسوا من المسلمين يظهرون الايمان ويسرون الكفر والتكذيب لعنهم الله.

11.Muḥammad ibn al-Fuḍayl narrated from Abū al-Ḥasan al-Riḍā saying, “I had written to him asking him about a [religious] question, so he wrote back to me saying, ‘Verily Allah says: Indeed the hypocrites seek to deceive Allah but it is He who causes them to be deceived. When they stand up for prayer, they do so sluggish, to be seen by the people, and remember Allah only a little, wavering all the time between this and that, belonging neither to one side nor the other. And whoever Allah leaves to stray, you will never find for him a way (Q4:142-3). These [people] are not from the progeny of the Messenger of Allah, and they are not from the faithful believers, and they are not [even] from the Muslims. Rather, they manifest belief [outwardly] but hide disbelief and rejection [of faith in their hearts] – may Allah curse them.’”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).