مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 3027
Business Transactions
Chapter - Section 2
وَعَنْ عَائِشَةَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «تَهَادُوا فَإِنَّ الْهَدِيَّةَ تُذْهِبُ الضَّغَائِنَ» . رَوَاهُ
‘A’isha reported the Prophet (ﷺ) as saying, "Give presents to one another, for a present removes grudges.” …transmitted it. (Mirqat, 3:380 says that Tirmidhi is the source in which this tradition is found. I have looked for it with the help of the Concordance, but have been unable to find it.
Mishkat al-Masabih, 3027ضَعِيف (الألباني)