Regarding identification of the species: 1 image.
Here with I am attached photo graph of a species for identification.
Habit/Habitat : Near the stream
Fruiting time : August
Cleistanthus patulus!!
It resembles Some Celastraceae members …, once check properly, if possible try for flowers,
Leaves are not toothed in Cleistanthus patulus (Roxb.) Müll.Arg. as per images and details herein and BSI Flora of India
Fruits also appear to be 4 locular.
Euonymus is possible.
Pl. see
https://efloraofindia.com/2011/03/01/euonymus/
it is not Cleistanthus
