Discovery of Derris poison (Tubai):
Around this time, after the belated, long-delayed death of Menggin, there lived a man named Rakup Beliang. This man was also very fond of shooting the blowpipe.
Eventually, from his hiding place Rakup Beliang saw her collecting the root of a tree which she pounded on a stone in the water. She then dipped the remains of the root into the river and he heard her call out, “If you are still living, Rakup Beliang, you must come out of the water now.” But as his head was above the water he felt nothing. After waiting for some time the maias again called loudly, begging Rakup Beliang, if he could hear her, to care well for the child and to name her Suri. She then went away weeping.
In due course Rakup Beliang came out from under the bank with his daughter and crossed the river, but on looking back he was puzzled to see many dead fish floating on the surface of the water. He therefore examined the remains of the root and found that it was a tubai (Denis) vine. Thus he realised that these roots could be used to poison fish, a method which is still used to this day. Tubai fishing is now a well-known practice and is regulated by the Government.