1. Kāmaguṇa Sutta.– The Buddha tells the monks that while he was still unenlightened his mind often strayed towards the five strands of sense desire, towards objects pleasing to the mind, and sometimes towards those of the present or the future. He reflected that it would be for his welfare to dwell diligent, mindful, and guarded regarding those strands of the senses that have left and impression on the mind. He advises them to dwell diligent, mindful, and guarded in the same way for their own welfare. After he has departed, the monks asked Ānanda to explain in detail what the Blessed One had taught in brief. Ānanda did so, and then told the monks to confirm what he had said with the Blessed one. They did so, and the Blessed One praised Ānanda’s wisdom. S.iv.97.
2. Kāmaguṇa Sutta.– There are these five strands of sense desire: sights, sounds, odours, flavours, and touches that are pleasing and delightful. The Noble Eightfold Path should be developed and cultivated to thoroughly understand and to abandon them. S.v.60.