عَنْ عُبَيْدٍ مَوْلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ وَسُئِلَ أَكَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَأْمُرُ بِصَلَاةٍ بَعْدَ الْمَكْتُوبَةِ؟ قَالَ نَعَمْ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ
Mawla of the Messenger, Sayyiduna Ubayd (may Allah be pleased with him) narrates that when he was asked whether the Messenger of Allah (peace and blessings be upon him and his family) used to command any prayer after the obligatory prayers, he said: Yes, between Maghrib and Isha.