Sayyiduna Uqbah bin Amir (may Allah be pleased with him) says: When this verse {فَسَبِّحْبِاسْمِرَبِّکَالْعَظِیْمِ} was revealed, the Messenger of Allah (peace and blessings be upon him) said: Adopt its implication in your bowing (ruku‘). When {سَبِّحِاسْمَرَبِّکَالْأَعْلٰی} was revealed, he said: Adopt its implication in your prostration (sajdah).
Hadith Referenceالفتح الربانی / أبواب صفة الصلاة / 1691