Sunan an-Nasa'i 504
It was narrated that Jabir said:
"A man asked the Messenger of Allah (ﷺ) about the times of prayer. He said: 'Pray with me.' So he prayed Zuhr when the sun had passsed its zenith, 'Asr when the shadow of a thing was equal to its height, Maghrib when the sun had set and 'Isha' when the twilight had disappeared." He said: "Then he prayed Zuhr when the shadow of a man was equal in length to his height, 'Asr when the length of a man's shadow was twice his height, and Maghrib just before the twilight disappeared." (One of the narrators) 'Abdullah bin Al-Harith said: "then he said: 'With regard to 'Isha' I think it is up to one-third of the night.'" [1]

[1] The speaker there is Thawr, who narrated it from 'Ata' from Jabir.
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ الْحَارِثِ، قَالَ حَدَّثَنَا ثَوْرٌ، حَدَّثَنِي سُلَيْمَانُ بْنُ مُوسَى، عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ، عَنْ جَابِرٍ، قَالَ سَأَلَ رَجُلٌ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ مَوَاقِيتِ الصَّلاَةِ فَقَالَ ‏
"‏ صَلِّ مَعِي ‏"‏ ‏.‏ فَصَلَّى الظُّهْرَ حِينَ زَاغَتِ الشَّمْسُ وَالْعَصْرَ حِينَ كَانَ فَىْءُ كُلِّ شَىْءٍ مِثْلَهُ وَالْمَغْرِبَ حِينَ غَابَتِ الشَّمْسُ وَالْعِشَاءَ حِينَ غَابَ الشَّفَقُ قَالَ ثُمَّ صَلَّى الظُّهْرَ حِينَ كَانَ فَىْءُ الإِنْسَانِ مِثْلَهُ وَالْعَصْرَ حِينَ كَانَ فَىْءُ الإِنْسَانِ مِثْلَيْهِ وَالْمَغْرِبَ حِينَ كَانَ قُبَيْلَ غَيْبُوبَةِ الشَّفَقِ ‏.‏ قَالَ عَبْدُ اللَّهِ بْنُ الْحَارِثِ ثُمَّ قَالَ فِي الْعِشَاءِ أُرَى إِلَى ثُلُثِ اللَّيْلِ ‏.‏