Is it permissible not to prostrate upon passing a verse of prostration (Ayat as-Sajdah) if the conditions for prostration are not met, such as being seated in a chair or wearing shoes?

The prostration of recitation is not obligatory, and it is permissible to prostrate while wearing pure shoes. One who recites while seated on a chair should descend to prostrate. If the reciter is not in a state of ritual purity, some scholars say to skip the prostration, while others hold that it should not be skipped.