The saying of Allah the Exalted: “And they were not commanded except to worship Allah, being sincere to Him in religion,” indicates that worship is not valid with shirk (associating partners with Allah) or bid'ah (religious innovation). Does bid'ah nullify...

The Shaykh : We said in the tafsir (exegesis) regarding the saying of Allah the Exalted: that worship is not valid with shirk (associating partners with Allah) nor with bid'ah (religious innovation). Does this mean that the person who commits bid'ah has all his deeds become invalid, or only the deed that corresponds to the bid'ah he is upon?
Only the deed that contains the bid'ah is invalidated, provided that the bid'ah is not one that entails disbelief. If it is one that entails disbelief, then no deed is accepted from the disbeliever. Yes.