Yazid bin Harun يزيد بن هارون · The Chapters on Jihad

It was narrated from ‘Ubadah bin Samit that the Prophet (ﷺ) awarded one quarter of the spoils to those who attacked the enemy at the beginning and one third to those who attacked at the end.

“The Muslim is obliged to obey (the ruler) whether he likes it or not, unless he is commanded to commit an act of disobedience. If he is commanded to commit a sin then he should neither listen nor obey.”