Upvote:3
We know that Assur-danin-pal rebelled even before the death of his father, King Shalmaneser III. We know that it was a serious rebellion that spread to at least 27 cities, including Ashur Nineneh, and Arbela. We know that it took four years to put the rebellion down [Kuhrt, 1995, Vol 2 p490].
It seems that the rebellion was eventually put down by Assur-danin-pal's brother, Shamshi-Adad V, probably with assistance from Marduk-zakir-shumi I. According to the Cambridge Ancient History:
"The Babylonian assistance is usually inferred from a surviving fragment of a treaty between Shamshi-Adad V and Marduk-zakir-shumi I in which the Assyrian ruler is clearly put on a lower footing than his Babylonian counterpart".
However, as the Cambridge Ancient History also observes,
"The only preserved narrative of the events [of the rebellion] is in the annals of Shamsi-Adam V."
-[p269]
So, it appears that if Assur-danin-pal received aid from Marduk-balassu-iqbi while Marduk-zakir-shumi I was still king, we have no surviving record.
Marduk-balassu-iqbi probably only ruled in Babylon for a little over a decade. He was defeated and captured by Shamshi-Adad V in 813 BCE and deported to Assyria. Turning once again to the Cambridge Ancient History, we see that
"... Marduk-balassu-iqbi is known chiefly from Assyrian texts as the object of Assyrian campaigns"
There is an article about Marduk-balassu-iqbi on Revolvy which includes some further background about him and the surviving sources (together with some references that might be of interest to you). Unfortunately, it makes no mention at all of Assur Danin Pal.
Given all the above, it is hard to see what the source of the information in the Wikipedia page might be. For now, I'd be careful about reading too much into an unsourced article on Wikipedia.