It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) regarding the saying of Allah Almighty, "Establish the prayer at the decline of the sun," that he said: "It means 'hina tazulush-shams': the time when the sun passes its zenith."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Shu'bah (may Allah have mercy on him) except Uthman (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الألف / 1371
Hadith Takhrij«أخرجه الضياء المقدسي فى «الأحاديث المختارة» برقم: 73، والبيهقي فى «السنن الكبرى» برقم: 1735، وابن أبي شيبة فى «مصنفه» برقم: 6331، 6339»