Dipti if you are taxonomist you should try and identify yourself using Flora of Tripura. This is how you learn identification. If you are not a student of plant taxonomy I can help you in correct identification. Most legumes require both flowers and fruits for correct identification. I presume it is common Mucuna which Arvind Singh gave a clue but he was confused and changed his mind second time. The identification based images is mostly misleading. If you are not taxonomist I can help if you can send a complete specimen (with flowers and fruits) for correct identification of your image. I suggest all research gate members to characterise any specimen you collect and try to identify using a local, regional, national flora or a published taxonomic revisionary paper of the taxon. If one fails then you can place on the net with images, your description and comparison with the nearest known species. This suggestion is mainly for budding and upcoming taxonomists. With both experience and familiarity we can post identification in flash of a minute then how will you learn. All these suggestions are in generalised and not for Dipti alone. Once a taxonomist identifies a specimen on his/her own following a procedure he/she will never forget in life.