Reference for Eruvin 129:14

אמרה ליה ברתיה דרב חסדא לרב חסדא לא בעי מר מינם פורתא אמר לה השתא אתו יומי דאריכי וקטיני ונינום טובא

of R'Hisda once asked R'Hisda,<span class="x" onmousemove="('comment',' Who spent his nights in prayer and study.');">³⁹</span> 'Would not the Master like to sleep a little? ' 'There will soon come', he replied: 'days that are long and short<span class="x" onmousemove="('comment',' The days in the grave are long in quantity but short in quality. In the grave one cannot continue his studies or perform any of the other good deeds.');">⁴⁰</span> and we shall have time to sleep long'. R'Nahman B'Isaac remarked: 'we are day workers'.

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