It is narrated from Hazrat Aisha (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said: "Your children are the purest of your earnings, therefore you may consume from the earnings of your children."
Hadith Referenceمسند احمد / مسند النساء / 25654
Hadith Gradingحکم دارالسلام:حديث حسن لغيره، وهذا إسناد ضعيف لجهالة عمة عمارة