'Abdur-Rahman bin Samurah (May Allah be pleased with him) said:
The Messenger of Allah (ﷺ) said, "Swear neither by the name of Taghut (i.e., false deities, false leaders, etc.) nor by your fathers."[Muslim]. (ID)
App reference (ID): Book 18, Hadith 198 (ID)
Arabic/English book reference (ID): Book 18, Hadith 1708 (ID)