don't intend to do sin
Allah says: People want to keep on doing sins (Al-Qiyamah: 5).
And: Whoever intends to do evil there in (Makkah) by wrongdoing, We will make him taste painful punishment (Al-Hajj: 25).
Also: Do not make a firm intention for marriage until the waiting period is over (Al-Baqarah: 235).
And: They want to put out the light of Allah with their mouths, but Allah will perfect His light even if disbelievers hate it (Ash-Shaff: 8).
And: Whoever wants only worldly profit, We will give them some of it, but they will have no share in the Hereafter (Asy-Syuuraa: 20).
Also: People who follow their desires want you to turn far away from the truth (An-Nisaa: 27).
(from Syajaratul Ma‘arif, Syaikh al-‘Izz bin Abdus Salam)