Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
muslim:480fQutaybah > Ḥātim b. Ismāʿīl > Jaʿfar b. Muḥammad > Muḥammad b. al-Munkadir > ʿAbdullāh b. Ḥunayn

This hadith is transmitted on the authority of 'Ali, but he made no mention of" while in prostration".  

مسلم:٤٨٠fوَحَدَّثَنَاهُ قُتَيْبَةُ عَنْ حَاتِمِ بْنِ إِسْمَاعِيلَ عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ عَنْ عَبْدِ اللَّهِ بْنِ حُنَيْنٍ

عَنْ عَلِيٍّ وَلَمْ يَذْكُرْ فِي السُّجُودِ