Serve Your Parents; It's exactly what Jihad is..

Narrated 'Abdullah bin 'Amr(R.A) :
A man said to the Prophet(P.B.U.H),

"Shall I participate in Jihad?"
The Prophet said,
"Are your parents are living?"
The man said, "Yes."
The Prophet said, 'Do Jihad for their benefit'."

Sahih Al-Bukhari
Volume :8
Book :73
Hadith :3