It is narrated from Hazrat Aisha (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) never slept before the Isha prayer, nor did he ever engage in storytelling after the Isha prayer.
Hadith Referenceمسند احمد / مسند النساء / 26280
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد فيه عبدالله بن عبد الرحمن ضعيف