Assalaam ‘ alaykum,
We want to establish a relational tie through suckling between my son and the daughter of my brother-in-law. My son is younger then 2 years. However, he already eats normal/solid food, and is not fully dependant on milk anymore. Is it still possible to establish a suckling-tie with 5 feedings, or is it not possible anymore?
I hope you can provide an answer to this specific issue. Baarakallaahu fiek!
Yes doing so is permissible, so long as he suckles at least 5 times and is younger than 2 years of age (according to the Hijri calendar). This is well established in the books of the madhhab.
See, for example, al-Rawdh al-Murbi’ (2/633)
And success is from Allah