The Duty of a Person When He Forgets Sajdah or Tashahhud
Issue No.1107- If a person forgets one or more sajdahs, he should perform the qaḍā of each of them after the prayer (Of course, if one forgets two sajdahs of one rak‘at, his prayer is void). Also if he forgets tashahhud, he should perform its qaḍā immediately after the prayer. And in addition to the qaḍā of sajdah and tashahhud, he should, as an obligatory precaution, offer separate sajdah al-sahw for each of them. (However, as was pointed out earlier, tashahhud of sajdah al-sahw will suffice for the forgotten tashahhud).
