Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a relay device may receive, from a first user equipment (UE) on a sidelink channel, a buffer status report. Accordingly, the relay device may receive, from a base station, a grant of an uplink resource based at least in part on determining a priority of data associated with the buffer status report. Additionally, the relay device may transmit, to the base station, the buffer status report based at least in part on receiving the grant of the uplink resource. Numerous other aspects are provided.