Abu Dawud

Benefits and Issues:
➊
Those things which are unlawful (haram) due to certain reasons,
and for which there is also a possibility of being lawful (halal) due to other reasons, and the matter is not clear and explicit,
then one should abstain from them, lest one falls into committing something haram.

➋
If a person does not avoid doubtful matters, then the result of such audacity is
that one day or another, he will fall into clear haram.

➌
Muhammad Salih al-Hashimi narrates from Imam Abu Dawud:
I resided in Tarsus for twenty years and wrote the Musnad; I wrote four thousand hadiths.
Then I reflected and saw that their foundation rests upon only four hadiths.
The first among them is this very hadith:
“The lawful is clear and the unlawful is clear” (Sahih al-Bukhari, Book of Faith, Hadith 52; Sahih Muslim, Book of Musaqat, Hadith 1599).
The second: “Actions are only by intentions” (Sahih al-Bukhari, Book of Revelation, Hadith 1).
The third: “Indeed, Allah is pure and accepts only that which is pure” (Sahih Muslim, Book of Slaughtering, Hadith 1015).
And the fourth is:
“From the excellence of a person’s Islam is his leaving that which does not concern him” (Jami‘ al-Tirmidhi, Book of Asceticism, Hadith 2317).