Muhammad Ahmad enhanced benchmarking capabilities in the endojs/endo repository by transitioning performance measurements from millisecond to nanosecond resolution, enabling more precise performance testing. He updated existing benchmarks to accommodate the new timing granularity and revised expected outcomes to reflect the increased accuracy. To improve consistency in error handling, he standardized error creation across benchmarking and test code to use the Error object. His work, primarily in JavaScript, focused on benchmarking and performance testing, addressing reviewer feedback to ensure code quality. Over the course of the month, he delivered one feature, demonstrating depth in performance instrumentation and attention to maintainable testing practices.