It is narrated from Hazrat Amr (may Allah be pleased with him) that when this incident was mentioned to the Prophet (peace and blessings be upon him), the Prophet (peace and blessings be upon him) said, "Amr! Did you lead your companions in prayer while you were in a state of impurity?" I submitted, "Yes, O Messenger of Allah (peace and blessings be upon him)! The night when ghusl became obligatory upon me, it was an extremely cold night and I feared that if I performed ghusl, I would perish. And I remembered the saying of Allah, the Mighty and Majestic: 'And do not kill yourselves. Indeed, Allah is to you ever Merciful.' (وَلَا تَقْتُلُوا أَنْفُسَكُمْ إِنَّ اللَّهَ كَانَ بِكُمْ رَحِيمًا) So I performed tayammum and offered the prayer." Upon hearing this, the Prophet (peace and blessings be upon him) smiled and did not say anything.