It is narrated from Sayyiduna Jabir bin Samurah (may Allah be pleased with him) that Sayyiduna Bilal (may Allah be pleased with him) would give the adhan when the sun had passed the meridian, then he would not stand for the iqamah until he saw the Prophet (peace and blessings be upon him); when he saw him (peace and blessings be upon him), he would give the iqamah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1805