Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 45

Sanskrit:

तस्मिन् विमान उत्कृष्टां शय्यां रतिकरीं श्रिता ।न चाबुध्यत तं कालं पत्यापीच्येन सङ्गता ॥ ४५ ॥

ITRANS:

tasmin vimāna utkṛṣṭāṁśayyāṁ rati-karīṁ śritāna cābudhyata taṁ kālaṁpatyāpīcyena saṅgatā

Translation:

In that aerial mansion, Devahūti, in the company of her handsome husband, situated on an excellent bed that increased sexual desires, could not realize how much time was passing.

Purport:

Sex indulgence is so enjoyable for materialistic people that when they engage in such activities they forget how time is passing. Saint Kardama and Devahūti, in their sex indulgence, also forgot how time was passing by.