I heard the Messenger of Allah ﷺ say, "A morning spent in the cause of Allah is better than the world and all it contains. An evening spent in the cause of Allah is better than the world and all it contains. And a space in Paradise the size of a whip is better than the world and all it contains."
حدثنا يونس بن محمد قال حدثنا العطاف بن خالد حدثنا أبو حازم قال سمعت
سمعت رسول الله ﷺ وهو يقول غدوة في سبيل الله خير من الدنيا وما فيها وروحة في سبيل الله خير من الدنيا وما فيها وموضع سوط في الجنة خير من الدنيا وما فيها
Its isnad is sahih, and Ataf bin Khalid Makhzumi, Abu Safwan Madani, was deemed trustworthy despite some errors he had, and the hadith has already appeared at 15500.