Islami masala niye ekta proshno chhilo bhai

Assalamu alaikum bhai ra, ekta chhoto religious proshno chhilo bole post dilam. A recent ek discussion e shunlam je namaz er moddhe bhul hoye gele konta kora sunnah ar konta wajib, eta niye onekei confused. Amar jante ichcha korche je sijdah sahw er poriman ebong kon kon obosthay eta korte hoy, eta ki kono reliable hadith e clear bhabe bola ache? Apnara jodi jante thaken ba kono trusted alim er reference thake, tahole kindly share korun. Inshallah sobar kache theke shikha hobe. 😊