It is narrated from Sayyiduna ‘Ubada bin Samit (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: “Whoever fights in the way of Allah and does not intend in his expedition except (to obtain) a rope, then he will get only that thing.”
Hadith Takhrijاس حدیث کی سند جید ہے۔ دیکھئے: [نسائي 3138] ، [ابن حبان 4638] ، [موارد الظمآن 1605]
Brief Explanation
(Commentary on Hadith 2452)
That is, he will not receive the reward of jihad because his intention was not sincere. Even though a rope is not a significant thing, yet having even such a small motive and greed stains sincerity and erases the reward.
A person should be mindful of this in every action, because the result will be according to the intention.