وَيَجۡعَلُونَ لِمَا لَا يَعۡلَمُونَ نَصِيبٗا مِّمَّا رَزَقۡنَٰهُمۡۗ تَٱللَّهِ لَتُسۡـَٔلُنَّ عَمَّا كُنتُمۡ تَفۡتَرُونَ ٥٦
And they assign to what they do not know1 [i.e., false deities] a portion of that which We have provided them. By Allāh, you will surely be questioned about what you used to invent.
Translation: Saheeh International (English)
1 i.e., that of which they have no knowledge; rather, they have mere assumption based upon tradition or the claims of misguided men.
Each word's meaning and sound
The idolaters allocate to their idols, which do not know anything - as they are lifeless objects that can neither benefit nor harm - a portion of the wealth that We provided for them, as a means of seeking closeness to those idols. By Allah, you - O idolaters - will be questioned on the Day of Judgement about your assertions that these idols are gods and that they are entitled to a portion of your wealth.
Al-Mukhtasar in interpreting the Noble Quran