When the prayer is due and one needs to relieve oneself, relieve oneself first

It is narrated from Sayyiduna Abdullah bin al-Arqam (may Allah be pleased with him) that he used to lead his people in prayer. The iqamah was called for the prayer, and he said: Let someone else lead the prayer, for I heard the Messenger of Allah (peace and blessings be upon him) say: "When the time of prayer comes and one of you needs to relieve himself, let him first go to relieve himself."
This hadith is sahih (authentic), but the two Shaykhs did not record it.

Ibn al-Daylami, who lived in Bayt al-Maqdis, rode out in search of Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) in Madinah. He asked about him, and they said: He has gone to Makkah. So he followed him and found that he had gone on to al-Ta'if. He followed him and found him in his farmland called al-Waht. Ibn al-Daylami said: I went in to him and found him walking hand in hand with a man from Quraysh, and the Qurashi was suspected of drinking wine. When I met him, I greeted him and he returned my greeting. He said: What has brought you out, and where have you come from? So I told him. Then I asked him: O Abdullah bin Amr, did you hear the Messenger of Allah (peace and blessings be upon him) say anything about the one who drinks wine? He said: Yes. The Qurashi pulled his hand away and left. Then he said: I heard the Prophet (peace and blessings be upon him) say: "No man of my Ummah drinks wine and then has a prayer of his accepted for forty days."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.