أحسن الله إليكم نسأل الله لنا ولكم العافية Shaykhnā, when going to sleep I say the prescribed adhkār and if I take long to sleep, I somtimes, make tasbīḥ until I fall asleep. I fear this may become a form of bidʿah, does this apply here? بارك الله فيكم

Ustadh AbdulAziz al-Haqqan
No it is not bid'ah.