It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) delayed the 'Isha prayer considerably. Then, when he came out towards the mosque, he found the people waiting for the prayer. The Prophet (peace and blessings be upon him) said: "At this moment, there is no one on the face of the earth remembering Allah from any religion except you." And on this occasion, these verses were revealed: «﴿لَيْسُواسَوَاءًمِنْأَهْلِالْكِتَابِ . . . . . وَمَايَفْعَلُوامِنْخَيْرٍفَلَنْيُكْفَرُوهُوَاللّٰهُعَلِيمٌبِالْمُتَّقِينَ﴾ [آل عمران : 113-115]» "They are not all alike among the People of the Book... And whatever good you do, it will not be denied you, and Allah knows well the pious."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 3760
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد حسن.