Anas (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: "Women and perfume have been made beloved to me, and the coolness of my eyes has been placed in prayer."
Explanation & Benefits
Hafiz Muhammad Ameen
The coolness of the eyes is an idiom, by which is meant true and heartfelt delight and happiness.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 3392