Between to-be-adopted and the adopting father the different kutas should agree. The boy should belong to his own gotra. At the time chosen the Moon should be in Asvini, Rohini, Punarvasu, Pushyami, Uttara Phalguni, Hasta, Svati, Anuradha, Uttara Ashadha, Sravana, Dhanishtha, Satabhisha, Uttara Bhadra, or Revati. No malefic should be in Lagna and the fifth house. Moon's placement and the nakshatra on that day should be in harmony with the natal ones. Benefics should be in lagna or aspect it.