Sunan An-Nasai, Chapter: The Book of the Times (of Prayer)

"We asked Salim bin Abdullah about prayer while traveling. We said: 'Did Abdullah combine any of his prayers while traveling?' He said: 'No, except at Jam.'* Then he paused, and said: 'Safiyyah was married to him, and she sent word to him that she was in her last day in this world and the first day in the Hereafter. So he rode off in a hurry, and I was with him. The time for prayer came and the Mu'adhdhin said to him: 'The prayer, O Abu Abdur-Rahman!' But he kept going until it was between the time for the two prayers. Then he stopped and said to the Muadhdhin: "Say the Iqamah, and when I say the Taslim at the end of Zuhr, say the Iqamah (again) straight away." So he said the Iqamah and he prayed Zuhr, two Rakahs, then he said the Iqamah (again) straight away, and he prayed Asr, two Rakahs. Then he rode off quickly until the sun set and the Mu'adhdhin said to him: "The prayer, O Abu Abdur-Rahman!" He said: "Do what you did before." He rode on until the stars appeared, then he stopped and said: "Say the Iqamah, then when I say the Taslim, say the Iqamah. So he said the Iqamah and he prayed Maghrib, three Rakahs, then he said the Iqamah (again) straight away and he prayed Isha, then he said one Taslim, turning his face. Then he said: "The Messenger of Allah (saw) said: 'If any one of you has an urgent need that he fears he may miss, let him pray like this.'" (Sahih) *Meaning Al-Muzdalifah.