´Al-Miqdam bin Ma'dikarib narrated that the Messenger of Allah (s.a.w) said:` "When one of you loves his brother,then let him inform him of it."
Shaykh Dr. Abdur Rahman Freywai
Explanation: 1: Because when both become aware and informed of each other's affection, mutual love will inevitably be generated between them, and all matters related to malice and discord will be removed from the hearts of the two Islamic brothers.
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 2392