'Abdullah bin Amr (may Allah be pleased with them both) reports that a man came to the Prophet (peace and blessings of Allah be upon him) seeking permission for jihad. The Prophet asked: "Are your parents alive?" He replied: "Yes." The Prophet said: "Then strive in their service."
Imam Tirmidhi says: 1- This hadith is Hasan Sahih. 2- There is also a narration from Ibn Abbas in this chapter.
Hadith Referenceسنن ترمذي / كتاب الجهاد عن رسول الله صلى الله عليه وسلم / 1671